Which multiplication equations below can be used to help solve 480 ÷ 8? A. 8 × 50 = 400; 8 × 10 = 80 B. 4 × 100 = 400; 4 × 20 =
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-8400/68 simplifies to to -2100/17, dolphins/year, so 2100 less dolphins every 17 years.
and we can just divide those to get the decimal amount of -123.53, which means, 123.53 less dolphins every year.
of course, there's no such a thing as 0.53 of a dolphin, so, we can say "about" 123 less dolphins per year.